Halogenated polymers with new sequence distributions
First Claim
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1. A halogenated copolymer comprising an isoolefin and a multiolefin, the halogenated copolymer having a copolymer sequence distribution defined by the following equation:
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F=mA/(1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of multiolefin to isoolefin in the copolymer; and
F is the isoolefin-multiolefin-multiolefin triad fraction in the copolymer;
wherein m is from greater than 2.5; and
wherein m is determined by solving said equation.
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Abstract
The invention relates to new polymerization processes including diluents including hydrofluorocarbons and their use to produce novel halogenated polymers with new sequence distributions. In particular, the invention relates to halogenated copolymers of an isoolefin, preferably isobutylene, and a multiolefin, preferably a conjugated diene, more preferably isoprene, with new sequence distributions.
141 Citations
87 Claims
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1. A halogenated copolymer comprising an isoolefin and a multiolefin, the halogenated copolymer having a copolymer sequence distribution defined by the following equation:
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F=mA/(1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of multiolefin to isoolefin in the copolymer; and
F is the isoolefin-multiolefin-multiolefin triad fraction in the copolymer;
wherein m is from greater than 2.5; and
wherein m is determined by solving said equation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87)
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8. A halogenated copolymer comprising isobutylene and isoprene, the halogenated copolymer having a copolymer sequence distribution defined by the following equation:
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F=mA/(1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of isoprene to isobutylene in the copolymer; and
F is the isobutylene-isoprene-isoprene triad fraction in the copolymer;
wherein m is from greater than 2.5; and
wherein m is determined by solving said equation. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A halogenated copolymer comprising an isoolefin and a multiolefin, the halogenated copolymer having a copolymer sequence distribution defined by the following equation:
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F =m A / (1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of multiolefin to isoolefin in the copolymer; and
F is the isoolefin-multiolefin-multiolefin triad fraction in the copolymer;
wherein m is from 1.10 to 1.25; and
wherein m is determined by solving said equation. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22)
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23. A halogenated copolymer comprising isobutylene and isoprene, the halogenated copolymer having a copolymer sequence distribution defined by the following equation:
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F =m A / (1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of isoprene to isobutylene in the copolymer; and
F is the isobutylene-isoprene-isoprene triad fraction in the copolymer;
wherein m is from 1.10 to 1.25; and
wherein m is determined by solving said equation. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30)
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31. A halogenated copolymer produced by the process comprising contacting an isoolefin and a multiolefin, one or more Lewis acid(s), one or more initiator(s), and a diluent comprising one or more hydrofluorocarbon(s) (HFC'"'"'s);
- the halogenated copolymer having a copolymer sequence distribution defined by the following equation;
F =m A / (1=mA)2wherein m is the copolymer sequence distribution parameter;
A is the molar ratio of multiolefin to isoolefin in the copolymer; and
F is the isoolefin-multiolefin-multiolefin triad fraction in the copolymer;
wherein m is from greater than 2.5 or m is from 1.10 to 1.25; and
wherein m is determined by solving said equation. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76)
- the halogenated copolymer having a copolymer sequence distribution defined by the following equation;
Specification